Steve, thanks for the information on "Barbara Allen".

One of the source singers in Cox's collection is Mrs. Rachel Fogg, who was originally from Doddridge County, WVA. There were four Child Ballads obtained from her by Mrs. Hilary G. Richardson, in Clarksburgy, Harrison County, WVA, in March of 1916. They were: "Down by the Greenwood Side", "Little Johnnie Green" (Barbara Allen), "Young Collins"/"Johnny Collins", and "The House Carpenter".

In each case, Mrs. Fogg said that she had learned the ballad from her mother, and she from her mother. In one instance, she added "on back into the old country across the sea", and in another instance, she added "...on back into the old country across the sea in Scotch, Dutch, or Jerusalem, she forgets which but in this country they call'em Hebrews."

Here are the links:

http://archive.org/stream/folksongsofsouth00coxj#page/28/mode/2up

http://archive.org/stream/folksongsofsouth00coxj#page/108/mode/2up

http://archive.org/stream/folksongsofsouth00coxj#page/110/mode/2up

http://archive.org/stream/folksongsofsouth00coxj#page/146/mode/2up

Here is an account of Cox's visit with Mrs. Fogg:

http://archive.org/stream/folksongsofsouth00coxj#page/n27/mode/2up

And here is a picture of Mrs. Fogg:

http://archive.org/stream/folksongsofsouth00coxj#page/112/mode/2up